Abstract
BackgroundAn optimal osteotomy angle avoids shortening of the first metatarsal bone after hallux valgus surgery and therefore reduces the risk of transfer-metatarsalgia. The purpose of the present ex-vivo study was to investigate whether augmented reality (AR) would improve accuracy of the distal osteotomy during hallux valgus surgery.MethodsDistal osteotomies of the first metatarsals were performed on a foot model by two surgeons with different levels of surgical experience each with (AR, n = 15 × 2) or without (controls, n = 15 × 2) overlay of a hologram depicting an angle of osteotomy perpendicular to the second metatarsal. Subsequently, the deviation of the osteotomy angle in the transverse plane was analyzed.ResultsOverall, AR decreased the extent of deviation and the AR guided osteotomies were more accurate (4.9 ± 4.2°) compared to the freehand cuts (6.7 ± 6.1°) by tendency (p = 0.2). However, while the inexperienced surgeon performed more accurate osteotomies with AR with a mean angle of 6.4 ± 3.5° compared to freehand 10.5 ± 5.5° (p = 0.02), no significant difference was noticed for the experienced surgeon with an osteotomy angle of around 3° in both cases.ConclusionThis pilot-study suggests that AR guided osteotomies can potentially improve accuracy during hallux valgus correction, particularly for less experienced surgeons.
Highlights
An optimal osteotomy angle avoids shortening of the first metatarsal bone after hallux valgus surgery and reduces the risk of transfer-metatarsalgia
We hypothesized that overlaying a hologram will increase the accuracy of distal MT I osteotomy, especially when carried out by inexperienced surgeons
augmented reality (AR) decreased the extent of deviation with a smaller standard deviation and a smaller range.For the more experienced foot surgeon, the use of AR did not increase the accuracy of distal osteotomies significantly overall
Summary
An optimal osteotomy angle avoids shortening of the first metatarsal bone after hallux valgus surgery and reduces the risk of transfer-metatarsalgia. The purpose of the present ex-vivo study was to investigate whether augmented reality (AR) would improve accuracy of the distal osteotomy during hallux valgus surgery. Once conservative measures have failed, distal first metatarsal (MT I) osteotomies (e.g. ReveL) are well established techniques to correct hallux valgus deformities [2,3,4,5,6]. AR has been evaluated in several surgical fields [8,9,10,11,12,13], but to our knowledge, no study has yet evaluated the use of AR in foot surgery
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